"What we know from many conflict situations is that people are not able to resolve themselves with what happened during the conflict if the missing issue is not dealt with", Mary Werntz, from the ICRC, said.

"This is where we would say in order to truly move forward as a society and to deal with what went on during the conflict part of that resolution has to come through working properly on the issue of the fatal missing people."

Bhattari was only 14 years-old when he was picked up by the army for being a supporter of the Maosists and taken to a torture centre.

He agreed to go back with Al Jazeera to the place of his 18 month interrogation and recalled that many of those detained died under torture in their cells or were taken away and shot.

This is the first time Bhattari has seen the torture camp since his release.

"I never thought I would be able to come back to this place but now that you brought me here, I feel a lot better," he said.

Al Jazeera asked the Nepalese army to comment on Bhattari's case and thousands of others but they declined.